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Bromine water is decolourised upon reaction with (E)-3-hexene. Q.24 It is due to (A) electrophilic addition of bromine to C=C (B) nucleophilic addition of bromine to C=C (C) electrophilic allylic […]

[FeCl4]2− (I), [CoCl4]2− (II) and [NiCl4]2− (III) are paramagnetic tetrahedral complexes. Q.23 The order of values of spin-only magnetic moment is (A) III > II > I (B) III > […]

[FeCl4]2− (I), [CoCl4]2− (II) and [NiCl4]2− (III) are paramagnetic tetrahedral complexes. Q.22 The order of values of crystal field stabilization energy is (A) I > III > II (B) III […]

Q.21 The value of standard half-cell potential of Cu2+/Cu couple (E0Cu2+,Cu) is 0.34 V. A wire of pure copper is immersed into a solution of copper nitrate. If the measured […]

Q.20 The value of Ka of acetic acid is 1.7 × 10−5 mol/dm3. The pH of a buffer solution prepared by mixing 100 ml of 0.1 M acetic acid with […]

Q.19 The iodide which reacts most slowly with cyanide ion as a nucleophile in an SN2 reaction is: (A) CH3CH2CH2CH2I (B) (C) (D) (CH3)2CHI Introduction The SN² (bimolecular nucleophilic substitution) […]

Q.17 The value of ionic product of water changes with temperature. It is 1 × 10−14 at 25 °C and 1 × 10−13 at 60 °C. The CORRECT statement with respect to […]

Q.16 As predicted by MO theory, the bond order and magnetic nature of NO+ are: (A) three and paramagnetic (B) two and diamagnetic (C) two and paramagnetic (D) three and […]

Q.15 The non-aromatic compound/ion is: Aromaticity  A compound is aromatic if it satisfies all of the following: Cyclic Planar Fully conjugated Follows Hückel’s rule → (4n + 2) π electrons […]

Q.14 The ionic size of Na+, F−, Mg2+ and Al3+ varies as: (A) Al3+ > Mg2+ > Na+ > F− (B) F− > Na+ > Mg2+ > Al3+ (C) Al3+ […]